为什么："timestamp": "2024-06-28T01:38:26.788+00:00", "status": 500, "error": "Internal Server Error", "path": "/user/add"

这个 JSON 对象表示了一个服务器响应的状态和信息。"timestamp"字段指出了事件发生的具体时间，这里是2024年6月28日，凌晨1点38分26秒788毫秒（协调世界时）。"status"字段值为500，表示HTTP状态码，通常意味着服务器遇到了一个内部错误（Internal Server Error），无法完成请求。"error"字段提供了关于错误的详细描述，这里是"Internal Server Error"，说明可能是服务器软件、配置或数据库连接等方面出现了问题。"path"字段表示请求的URL路径，这里是"/user/add"，这可能是一个试图添加用户操作的API端点。

相关问题

{ "timestamp": "2023-06-01T08:48:12.746+0000", "status": 500, "error": "Internal Server Error", "message": "nested exception is org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 20", "trace": "org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 20\r\n\tat org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:92)\r\n\tat org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:440)\r\n\tat com.sun.proxy.$Proxy95.selectOne(Unknown Source)\r\n\tat org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:159)\r\n\tat com.baomidou.mybatisplus.core.override.MybatisMapperMethod.execute(MybatisMapperMethod.java:89)\r\n\tat

Based on the error message, it seems that there was an issue with a MyBatis query. The query was expecting only one result (or null) to be returned, but it found 20 results instead. This could be caused by a variety of factors, such as incorrect query logic or data duplication in the database. To further diagnose the issue, it would be helpful to review the MyBatis configuration and the specific query being executed.